Window-sash for purposes of ventilation and fastening.



No. 633,|29. Patented sept. le, |899. E. L. Evans.

WINDUW SASH FORPURPUSES 0F VENTILATlON AND FASTENING.

, (Application filed Nov. 14, 189B.)

No Model.)

A TTOHNE YS UNrrnD STATES' PATENT Genios.

EDWARD LUSCOMBE EVENS, F ADELAIDE, SOUTH AUSTRALIA.

WINDOW-SASH FOR PURPOSES 0F VENTILATION AND FASTENING.

SPECIFICATION forming part of Letters Patent No. 633,129, datedSeptember 19, 1.899.

v Application filed November 14, 1898. Serial No.696 ,399. KNO model.)

' ments in or connected with WindoW-sashes for purposes of ventilationand fastening, the special object of such invention being, first, tocombine with certain portions of the Wind owsash, hitherto serving onlyone purpose, a ventilator, so that fresh air may be admitted into theroom Without causing the usual discomfort of draft, and, secondly, tocombine with such sash and Ventilator a lockin g appliance which, Whilebeing simple in construction, will aord great safety to the occupants orcontents of the room.

In order that my invention lnay be fully understood, I Will now refer tothe accompanying sheet of illustrations, in Which- Figure l is a sideelevation of combined sash, ventilator, and lock. Fig. 2 is a plan ofsame. Fig. 3 is a side elevation of a single ventilator which may beused on a larger sash; Fig. 4, a plan of the above, but also indicatingthe position of adjacent ventilator on the opposite sash, which affordsprotection to the lock; Figs. 5 and 6, an end View and cross-section ofventilators.

Throughout the various figures similar letters of reference are used todenote similar or corresponding parts wherever they occur.

A is the frame or sash of the Window, B being the glass in same.

C is the main ventilator-casting, the bottom portion of which isperforated, so as to form a grid C. D is a similarly-perforated slidinggrid, which Works upon suitable bearings formed by portions ot the maincasting and is covered with a fixed grid E. All of the grids abovementioned are similar in their general construction.

F is a slide-button, the shank of which passes through a slot F in theupper grid and is rigidly fixed to the sliding grid D. By means of thisbutton it Will be readily understood that the holes in the sliding gridmay be set opposite to either the holes or the bars of the fixed grid E,so as to open or close theairpassage between the parts,as may berequired.

G is a portion of the main casting placed at right angles t0 the gridsand projecting vertically above the same, the top part beingscreW-cutforattaching the lock H thereto, the shouldered portion of suchprojection forming a support for the sliding grid D above mentioned. Thelock H swings or turns on the projecting portion G, being screwedthereto, and thus dispensing with the necessity of using a lock-nut. Thelock is placed in position either before the ventilator is fixed to thesash or before the glass is inserted.

.I is a lug or stop for limiting the traverse of the lock.

The various portions hereinbefore described will be found on theVentilator, which is combined with the bottom rail of the outer sash,and in addition to these parts the ventilator which is used on the toprail of the inner sash has a projecting lip K, Which slightly overlapsthe edge of the outer sash. The ventilator which is on the latter isrecessed for the reception of the same, as Will be Well understood onreference to Fig. 6 of the drawings.

In the construction of the grids D and E, I prefer to arrange the endswith hinges, so that access can be obtained to the interior of theventilator for cleaning purposes. The hinging arrangement will be vWellunderstood on reference to Figs. l and 3 of the drawings, in which L isthe hinge and L a lug and pinhole for securing the grid when in a closedposition. The sliding grid may thus be one continuous but hinged piece,as Will be seen in Fig. l, the middle portion being slotted to allow itto pass the middle projection. To prevent iiies and insects from gainingadmission to the interior of the ventilator, a piece of ordinaryWire-gauze (not shown in the drawings) may be inserted above the bottomgrid. The main castings may be either closed on the inner side, as shownin Fig. 5, or open, as in part of Fig. in which latter case it will notbe necessary to cut awayso much of the sashrail.

The ventilators are attached to the sash by screws M.

In large sashes three or more ventilators can be used and may bearranged as illustrated in Fig. i of the drawings.

Having now particularly described and ascertained the nature ot my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- A l. In combination, the sash-rail, the castingcomprising the grids, one of said grids having a lip K projecting acrossthe joint between the

